This video showcases the American DJ Galaxian 3D Laser Effect Light. This special effects light is awesome, powerful enough for clubs and large party rooms, but also lightweight and versatile for smaller venues and mobile DJs!
As you can see from the video demo, the green and red laser beams that it shoots off create a spectacular lighting effect. The unit can be operated via DMX (5 channels), sound active or master/slave, so it's perfect for all situations.
Note that most of the video shows two units side by side, so you'll only get half the effect shown in some parts -- but you can easily imagine that even half would be more than enough for most party rooms!